福建农业学报2016，Vol.31Issue(8)：849-852,4.DOI:10.19303/j.issn.1008-0384.2016.08.011
不同杂交罗非鱼F1代耐寒性能的研究
Cold Tolerances of F1 Tilapia Hybrids
摘要
Abstract
The tolerances of 3 F1 tilapia hybrids of Oreochromis niloticus (♀) ×Oreochromis aureus (♂)to cold temperatures were studied.By artificially lowering the tank water temperature,the death rate,semi-lethal low temperature (LT50 ),and cumulative survival rate of the fish were monitored to determine the abilities of the F1 tilapia hybridsto survive in cold temperatures.There were significant differences in their cold tolerances among the 3 F1 hybrids.Aiao began to die soon after the water temperature was reduced to 9.6℃,ranging from 9.6℃ to 7.5℃. For Xiang′ao,the lethal temperature ranged from 9.4℃ to 6.7℃;and,it was 8.9℃ to 6.3℃ for Jiao tilapia.LT50 of Aiaowas 8.63℃;that of Xiang′ao,8.23℃;and,that of Jiao,7.60℃.It appeared that Jiao was a significantly more hardy tilapiathan either Aiao or Xiang′ao (P<0.05).关键词
罗非鱼/杂交 F1/耐寒性/半致死低温Key words
tilapia/F1 hybrid/cold tolerance/semi-lethal low temperature分类
农业科技引用本文复制引用
王茂元,钟全福,田田,吴妹英,胡振禧..不同杂交罗非鱼F1代耐寒性能的研究[J].福建农业学报,2016,31(8):849-852,4.基金项目
福建省科技计划项目---省属公益类科研院所基本科研专项(2014R1002-4) （2014R1002-4）
国家现代农业产业技术体系专项(CARS-49) （CARS-49）
